Human Existence on Earth

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This concern was also formulated by one of the scientists Stephen Hawking,the most famous scientist after Albert Einstein. He has innovative works in physics and cosmology. 6 Stephen Hawking's Theory of How Humans Will End.

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• Because of vaccines
  This genius man once said that the greatest threat to mankind is not from outer space but from human creation itself.Previously until now scientists played genetic engineering viruses to treat human diseases.For example, researchers created a virus that was able to kill cancer cells.Currently, they also combine several deadly viruses into one and even mix DNA from people, cows, and dogs.The problem is we still cannot confirm the long-term effects of these vaccines.

• Alien invasion.
  Hawking believes that there are other life forms in the universe and that they are not friendly beings. In 1983, Hawking together with James Hartle compiled a "no-boundary" theory that describes how the Earth formed during the Big Bang, according to this theory, our cosmos is just one of many separate universes made by a number of other Big Bang. there is no evidence to prove that we are not alone in the universe, there is a high possibility that aliens want to destroy other living things.

• Stars run out of energy
  Before he died Hawking had made his last work which he named A Smooth Exit From Eternal Inflation. This work was completed two weeks before he died.
  Hawking predicted that our universe would eventually fade into darkness because all stars would run out of energy. That is why in Hawking's opinion, we really need to reach another universe as soon as possible if we want to survive.

• Robots replace humans
  Although Hawking's life depended on artificial intelligence, he did not believe it at all. He once said that the discovery could be the worst discovery of the history of human civilization because it might replace humans altogether. According to him, the development of robotic technology can be a fatal mistake if we are not aware of the risks that can be brought to humans. "Once humans develop artificial intelligence, they will break away and redesign themselves at an ever increasing rate," Hawking predicts.

• Nuclear weapons will destroy humans.
  In Hawking's opinion, aggression is the worst human action that must be removed. However, there are no signs of conflict diminishing at this time. The development of military technology and weapons of mass destruction can lead us to the consequences of disasters that will mean the end of our world.

• The Earth will turn into a fireball ... One theory Hawking says that the Earth will become a fireball in less than 600 years. At that time, the Earth would be too dense to make the planet redden and humanity would be destroyed. Hawking added that global warming worsened the situation. The condition makes the Earth similar to Venus, where temperatures average around 250 degrees Celsius, often raining sulfuric acid, and there will be wind speeds of up to 100 meters per second. "Climate change is one of the big dangers we face and it is one that we can prevent if we act now," Hawking said.

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